# AirDrive vs Resistor calc

The clearest difference is update cadence: Resistor calc at every 2 months against AirDrive's every 12 months. Resistor calc also leads on price ($1.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AirDrive costs $4.99 and Resistor calc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AirDrive ships an update every 12 months, Resistor calc every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | AirDrive | Resistor calc |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/airdrive-wireless-hard-drive/id781508900/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 26.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 10 MB | 17 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sebastien BUET](https://appshunter.io/developer/321941181) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### AirDrive

[App page](https://appshunter.io/ios/app/airdrive-wireless-hard-drive/id781508900)

Transform your iPhone or iPad into a wireless external hard drive. Easily transfer, view, and share photos, videos, music, and documents across devices without needing special software or cables. Secure your data with a pass lock and organize files efficiently.

**Highlights:** Wireless external hard drive functionality, File transfer without iTunes or software, View and share photos, videos, and music, Create and organize folders, Pass lock for data security, Download files from the internet, Create notes (drawing, audio, text)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Resistor calc

[App page](https://appshunter.io/ios/app/resistor-calc-electronics/id6477826973)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AirDrive free?

AirDrive costs $4.99, with no in-app purchases.

### Is Resistor calc free?

Resistor calc costs $1.99, with no in-app purchases.

### Do AirDrive or Resistor calc have ads?

Neither AirDrive nor Resistor calc shows ads.

### Which is updated more often, AirDrive or Resistor calc?

AirDrive ships an update every 12 months, and Resistor calc every 2 months. Most recently, AirDrive was updated on November 1, 2026 and Resistor calc on November 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*